

Use a dash instead of a comma here.
[ˈjuz ə ˈdæʃ ɪnˈstɛd əv ə ˈkɑmə ˈhɪr.]
There are too many dashes in your essay.
[ˈðɛr ər ˈtu ˈmɛni ˈdæʃəz ˈɪn jər ˈɛˌseɪ.]
Is that a minus sign or a dash?
[ˈɪz ˈðæt ə ˈmaɪnəs ˈsaɪn ɔr ə ˈdæʃ?]
"dash" is in the lesson "Science" (Level 39), along with 11 other useful words. LinDuo has 180 topic lessons like this one, 2,375 words in total. Every word has an illustration, a transcription and pronunciation in a female and a male voice. Just 10–15 minutes a day is enough to learn them all. Free, and works offline.